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yanalaym [24]
2 years ago
9

Use the drop-down menus to complete the statements. A vertical column of elements in the periodic table is called a ____ . A hor

izontal row of elements in the periodic table is called a ____ . Atoms of elements in the same group have the same ____ . As you move from left to right on the periodic table, the atomic number ____ .
Biology
2 answers:
SOVA2 [1]2 years ago
8 0

Answer:

1) group

2) period

3) numbers of valence electrons

4) increases

Explanation:

When we move in a periodic table from top to bottom or vice versa along a vertical column , it is said that we are moving along a "group" in a periodic table.

Like wise when we move in a periodic table from left to right or right to left  in a horizontal row , it is said that we are moving along a "period" in a periodic table.

The classification of elements belonging to any specific group of periodic table is dependent on the total number of valence electron. All elements of with in a group have same number of valence electrons however, the orbitals may change.

The atomic number increases while moving from left to right as the number of orbitals in which the valence electron is found also increase in the same direction.

stepladder [879]2 years ago
5 0

A vertical column of elements in the periodic table is called a group

A horizontal row of elements in the periodic table is called a period

Atoms of elements in the same group have the same numbers of valence electrons

As you move from left to right on the periodic table, the atomic number increases

1) group

2) period

3) numbers of valence electrons

4) increases


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Tom wants to improve the amount of recycling in his city. Which initiative should he propose?
oksano4ka [1.4K]

Answer:

If you want to improve the amount of the recycling in your city, Tom need to implement a lot of initiatives and the following on this question isn't the right way to do it.

Explanation:

    Whether Tom wants to improve the amount of recycling in his city, he need not to ban all plastics. What he must to do is to take plastics from houses, companies, supermarkets and other places that use this kind of material and recycle them, and change them in other products to back to the society or community. Besides recycle, he need to contact the local authority to make  recycling campaigns. That's the reason to close grocery stores on Sundays isn't the right way to do in this situation. If he are wishing to close all landfills, isn't the right option to do, because you have to implement a good landfills and make it works in a right way, because is important to have an  sustainable landfill without creating environmental pollution for the community, local population and the planet. But to do all of these things explained above, you have to obtain investiment and money throughout the authorities,  governments or maybe  businessmen from big companies.

6 0
2 years ago
An example of a properly functioning homeostatic control system is seen when
ANEK [815]

Answer:

the kidneys excrete salt into the urine when dietary salt levels rise

Explanation:

Hyponatremia is an electrolyte imbalance, with a low level of sodium in the blood. The normal value of sodium in adults is 136 to 145 mEq / L. Sodium is an element, or electrolyte of the blood. Sodium chloride is commonly known as table salt.

Certain conditions can cause decreased sodium in the blood. Specific causes of hyponatremia include:

Water poisoning (water replacement without electrolyte replacement).

Problems in the kidneys, heart or liver.

Medications: such as diuretics, Heparin, certain chemotherapeutics (Aminoglutethimide, Cyclophosphamide and Vincristine).

Conditions related to steroids, hormones or metabolic defects, such as a syndrome that alters the secretion of antidiuretic hormone (SSIHA). If this occurs, you urinate frequently and the kidneys excrete too much sodium. This can result from many conditions, including certain types of lung cancer.

6 0
2 years ago
Sully works as a geologist in the southwestern United States. He plans to choose an unstable isotope to find the absolute age of
BigorU [14]

Answer: 3. The half- life of the isotope must be long enough to capture the age of the rock. and

4. their should be more than one unstable isotope.

In radioactive dating proces, the parent isotope is in unstable state which undergoes decay process to give stable  daughter isotopes. Half-life is the amount of time it takes for half of the parent isotopes to decay. The  rock dating requires a long lived parent isotope so that it can capture the exact rock age.

One rock when get decayed in the daughter isotope other will be available identify the age.



                   

3 0
2 years ago
Read 2 more answers
Use the drop-down menus to determine where these organelles can be found.
damaskus [11]

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Cell wall- Plant cells only

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Lysosomes- Both animal and plant cells

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Cell Membrane- Both animals and plant cells

Cytoplasm-Both animal and plant cells

Chloroplasts-Plant cells only


Hope it helps have a wonderful day ; )

6 0
2 years ago
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The digestive system breaks down the food we eat while the circulatory system transports the tiny particles to each cell in the body.
4 0
2 years ago
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